I have a website and in one of the pages is a photo album, which appears thus in Chromium:

and in firefox, as below:

As you can see, there is a white patch to the left and above the gallery box in the former picture while in the latter there is tranparency throughout the outside of the box. I want to get rid of these white patches. I learnt that it necessarily boils down to how Chromium handles iframes. I figured out that this is the code fragment that needs change so that the transparency is achieved in both browsers.
echo "<frameset rows='424px' frameborder=0 >";
echo "<frame name='akc' style='background-color: transparent' noresize='noresize'";
echo "src='aneesh.php?album=" . start() . "'/></frameset>";
So my question boils down to getting a replacement code that produces the same result in Chromium as in Firefox. I want a complete replacement for frame tag. (A tag that can be targeted just like frames, which can contain webpages - like frame where we use 'src' attribute - and also support transparency)